Author:Charles Rollin Keyes
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Articles in Popular Science Monthly
- "Lineaments of the Desert" in Popular Science Monthly, 74 (January 1909)
- "Wind-Graved Mesas and their Message" in Popular Science Monthly, 81 (September 1912)
- "Great Erosional Work of Winds" in Popular Science Monthly, 82 (May 1913)
- "Early Geological Work of Thomas Nuttall" in Popular Science Monthly, 84 (February 1914)
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1928.
The longest-living author of these works died in 1942, so these works are in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.